Table 2.

Two-Year Change of Mean Choroidal Thickness on the Standard ETDRS Grid

Characteristic (µm)	Baseline (Mean ± SD)	2-Year (Mean ± SD)	Mean 2-Year Difference (95% CI)a
MCT	206.62 ± 72.42	194.02 ± 71.08	−12.60 (−13.62 to −11.57)b
Outer superior	226.30 ± 75.37	212.07 ± 74.40	−14.23 (−15.68 to −12.78)b
Inner superior	231.00 ± 81.02	217.41 ± 79.47	−13.59 (−15.14 to −12.04)b
Outer temporal	205.59 ± 69.53	192.55 ± 67.03	−13.04 (−14.24 to −11.84)b
Inner temporal	223.90 ± 78.48	209.82 ± 76.83	−14.08 (−15.38 to −12.78)b
Foveal center	230.31 ± 86.96	215.77 ± 85.24	−14.55 (−15.87 to −13.22)b
Inner nasal	217.87 ± 89.01	204.56 ± 87.41	−13.31 (−13.58 to −12.05)b
Outer nasal	174.80 ± 82.75	164.82 ± 81.73	−9.98 (−11.10 to −8.85)b
Inner inferior	217.17 ± 87.79	203.67 ± 86.30	−13.49 (−15.02 to −11.97)b
Outer inferior	197.46 ± 81.71	185.82 ± 79.88	−11.64 (−12.92 to −10.36)b

Regarding the multiple comparison, post hoc testing using the Bonferroni correction was applied. P < 0.005 was considered statistically significant.

^aPaired t-test.

^bP < 0.001.